Sorry to hear about your troubles with these incompetent mechanics... I took my Srt6 in for an oil change and a tire rotation in a shop in Helena Montana and those guys there put my 19" tires in the front (in a srt6 the rims are 18" in front and 19" in the back)... as soon as I saw that I went back in and asked the guy who did the work cause he obviously doesn't know what he was doing. But it wasn't my local shop I was passing through and I will never stop there again.